Lexus IS300 / IS350 Base & F Sport Carbon Fiber Rear Diffuser, 2017–2020
Available in stock (20)
Carbon Fiber Rear Bumper Diffuser for Lexus IS300 and IS350
Give the rear bumper of your Lexus IS a coordinated carbon-fiber finish. This replacement-style diffuser is listed for the IS300 and IS350 Base and F Sport sedans and is designed to replace the factory plastic diffuser rather than act as a complete rear bumper assembly.
Vehicle fitment
- Models: Lexus IS300 and IS350.
- Trims: Base and F Sport, according to the supplied fitment details.
- Body style: 4-door sedan.
- Model years: 2017, 2018, 2019 and 2020.
- Fitment for IS250, IS F, other body styles or later model years is not confirmed by the supplied specifications. F Sport trim should not be confused with the separate IS F model.
Compare your rear bumper, original diffuser mounting points and exhaust outlet layout with the product photos before ordering. Modified bumpers or exhaust systems require a separate fitment check.
Material and finish
- 3×3 weave carbon fiber, as specified in the original listing.
- Glossy surface with a double-layer UV-protected clear coating.
- Replacement-style rear diffuser; the complete bumper and exhaust components are not described as part of this product.
Installation
Self-tapping screws and tape are listed as included. Professional installation is recommended. Remove the original diffuser as appropriate, then test-fit the replacement and check alignment, exhaust clearance and access around adjacent bumper components before fastening.
Self-tapping screws may require drilling, so a no-drill installation is not guaranteed. If using adhesive tape, clean and dry the mounting surfaces and follow the adhesive manufacturer's preparation and curing instructions.
Package details
The listing describes a rear diffuser with self-tapping screws and tape. Exact diffuser piece count, dimensions and the detailed hardware inventory are not specified; confirm these details before purchase.
Frequently asked questions
Is this a complete rear bumper?
No. The source describes a diffuser that replaces the factory diffuser section.
Does it fit both Base and F Sport?
Both trims are listed for 2017–2020 IS300 and IS350 sedans. Verify the original bumper and diffuser profile on your vehicle before ordering.
Will it fit a 2021 model?
The published fitment details specify 2017–2020. Later-year compatibility is not confirmed.
Does it improve downforce or fuel economy?
No measured aerodynamic or fuel-economy results are supplied, so those performance effects are not promised.
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Stephanie L.
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